Notoriously difficult to pin down, electrons have always been free spirits -- until now that is. According to a paper published by science journal Nature, folk at Cambridge University much cleverer than we have tamed single electrons, succeeding in coaxing them directly from point-to-point. The technique involves creating a small hole in gallium arsenide, called a "quantum dot," then creating a channel of energy higher than the neighboring electrons to shuttle cargo off to another empty "dot." Why should you care? Well, while you might not see this technology in the next smartphone, it should give quantum computing a bit of a nudge forward, smoothing the rate of information transfer. If the concept works out, it'll improve the way qubits move around those sub-atomic circuits, where jumping around like a frog in a sock is generally considered bad form.

[Image courtesy of the io9]

We've seen plenty of high-efficiency lightbulbs rolling around, but this new one -- if it ever sees the light of day (groan) -- has impressive potential. Cambridge University's team of researchers are apparently quite close to bringing to production an LED bulb that can last up to 100,000 hours (about 60 years), and which -- unlike some other eco-friendly lighting -- contains no mercury. In the UK, where sale of some incandescents has been phased out, the team estimates they could reduce carbon emissions by about 40 million tons. The team has also significantly cheapened production by growing the LEDs on silicon wafers rather than the sapphire ones normally used, thereby bring the cost to... wait for it: $2.85. So when can we expect to see these badboys on the market? "Soon."

[Via Switched]